Explosion in Livermore may be linked to drugs

May 22, 2011 4:10:46 PM PDT

LIVERMORE, Calif. --

Fire investigators in Livermore have uncovered evidence that suggests an explosion inside an apartment may be linked to illegal drug activity.

Investigators say they have yet to determine the cause of the explosion that happened around 5 p.m. Saturday in a building on Silver Oaks Way in downtown Livermore. Three people inside the apartment, two men and one woman, suffered severe burns and remain in critical condition.